Duplex dead end



y 1934- F. B. WIEGAND 1,960,610

DUPLEX DEAD END Filed Nov. 2, 1929 H Mmumn: I "IUWHHII: I

Patented May 29, 1934 UNITED STATS PATENT OFFICE 1 Claim.

This invention relates to supports for an aerial conductor, more particularly, to supports for the end of such a conductor, that is, for that portion of an aerial conductor commonly known as the dead end.

A principal object of this invention is the production of a dead end support for aerial conductors which may be placed upon a cross arm 01'' a wire pole in the same position as that com-- monly occupied by the pin for an insulator.

A further object of the invention is the production of a device of the type specified which will be double ended or duplex so that it may act as a support for the dead ends of two aerial conductors, approaching from opposite directions.

A further object of the invention is the production of a device of the type specified which will be simple to manufacture, easy to install, and efficient in use.

Other objects and advantages will appear as the description of the particular embodiment selected to illustrate the invention progresses, and the novel features thereof will be particularly pointed out in the appended claim.

In describing the invention in detaii and the particular physical embodiment selected to illustrate the invention, reference will be had to the accompanying drawing wherein like characters of reference designate corresponding parts throughout the several views, and in which:

Figure 1 is a side elevational view of a device, embodying. my invention, mounted upon a cross arm, shown in section; Fig. 2 is a top plan view of the device as shown by Fig. 1; Fig. 3 is a top plan view of a part of my device which has been designated by me, a pedestal; Fig. 4 is an elevational cross-sectional view on the plane indicated by the line IV-IV of Fig. 1 viewed in the direction of the arrows at the ends of the line.

Numeral 1 designates the ordinary and well known cross arms as used for the support of aerial conductors upon a pole.

Numeral 2 designates a pedestal mounted upon the cross arm 1.

3 designates a bracket mounted upon the pedestal 2 and constructed and adapted to be attached to the dead end of aerial conductors as *4 and 5.

The cross arm 1 has the usual orifice 6 therethrough commonly used for receiving the end of the pin or bolt which supports an insulator to which an aerial conductor is attached. In the present case, the orifice 6 receives a bolt 7 which not only passes through the cross arm 1 but also through the orifice 8 of the pedestal 2 and through the orifice 9 of the bracket 3. This bolt '7 is provided with a head 10, preferably integral, a threaded lower end 11, and a threaded nut 12. Between the head 10 and the bracket 3 is a metal washer l3, and between the nut 12 and the cross arm 1 is an insulating washer 14. By tightening the nut 12 the bracket 3 is held firmly against the pedestal 2 and the pedestal 2 is held firmly against the cross arm 1 so that all parts are held together firmly and rigidly.

The pedestal 2 is preferably provided with an enlarged base portion 15, the inside 16 of which is formed to conform with the usual contour of the upper side of the usual cross arm, thus providing a broad substantial bearing for the pedestal which prevents undue cutting or crushing of the wood of the cross arm. In order to provide the necessary strength without undue increase of weight the central pillar 17 of the pedestal 2 is joined to the base by a plurality or ribs as 18, 19, 20 and 21. These ribs provide the necessary strength of connection between the pillar and the base Without unduly increasing the weight of the pedestal.

The top face of the central pillar 17 is provided with a shoulder portion 22 against which the bracket is forced by the tightening of the nut 12 of the bolt 7 thus providing a substantial uniform seat for the bracket 3. In addition, the top portion of the pillar is so formed that it functions to prevent a rotation of the bracket 3 about the pedestal 2. In the present case the top of the central pillar 17 is made square with opposite parallel sides, and the orifice 9 in the bracket 3 is made to correspond, that is square, and to quite closely fit the squared end 23 of the pillar 1'7.

The construction hereinbefore described is simple to make and easy to install and when installed is abundantly strong to withstand the severe strains placed upon it by the aerial conductors 4 and 5.

The bracket 3 is made double ended or duplex so that the dead end of one conductor or the dead ends of two conductors may be connected thereto. Each end is similarly constructed and is essentially an elongated annulus, the wall 24 of which is rounded as at 25 on the inside and provided with a rib as 26 on the outside. The inside contour of the annulus is formed by portions of two circles one struck from the center 27, the other from the center 28, and by the portions 29 merging one circle gradually into the other. The portion of the inside surface struck from the center 27 is of such dimensions that the circumferential grooved insulating disc 30 may be passed transversely therethrough or positioned therein. The circumferentially grooved insulating disc 30 may, after being positioned in the space struck from the center 27, be moved longitudinally of the bracket 3 and positioned in the space of the annulus where the walls are struck from the center 28 with the circumferentially grooved disc 31 bearing snugly against the rounded surface 25.

The circumferentially grooved insulating disc 30 has an orifice as 32 formed transversely therethrough. This orifice receives the aerial conductor as 4, sufficient of the conductor being threaded through the orifice so that the end as 33, as shown in Fig. 1, may be attached by any suitable or appropriate means to the main portion 34.

The complete device as illustrated in the drawing may be used as a dead end support for one aerial conductor, as 4, but preferably for two, 4 and 5, because in that way the strain upon the bolt 7 and the bracket 3 and the pedestal 2 is substantially equalized or balanced.

Although I have particularly described the construction of one physical embodiment of my invention, and explained the operation and principle thereof, nevertheless, I desire to have it understood that the form selected is merely illustrative but does not exhaust the possible physical embodiments of the idea of means underlying my invention.

What I claim as new and desire to secure by Letters Patent of the United States, is:

A dead end aerial conductor support, comprising in combination: a bracket including an intermediate portion and two oppositely disposed portions, said intermediate portion being formed with a non-circular orifice; a pedestal formed with a shoulder and a portion immediately above the shoulder formed to fit into the orifice in the bracket to prevent turning movement thereof, said pedestal being formed with a longitudinal orifice therethrough and means passing through said pedestal and said orifice for detachably holding the bracket on the pedestal and the pedestal on the cross arm.

FRED B. WIEGAND. 

